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python Programming Glossary: entropy

How to solve the “Mastermind” guessing game?

http://stackoverflow.com/questions/1185634/how-to-solve-the-mastermind-guessing-game

python algorithm share improve this question Key tools entropy greediness branch and bound Python generators itertools decorate.. let's give it a try First I need a method to calculate the entropy information of a set of probabilities. This is just ‘p log p... input that are not normalized i.e. do not add up to 1 def entropy P total sum P return sum p math.log p 2 for p in v total for..

How does sklearn.svm.svc's function predict_proba() work internally?

http://stackoverflow.com/questions/15111408/how-does-sklearn-svm-svcs-function-predict-proba-work-internally

model on top of the SVM's outputs under a cross entropy loss function. To prevent this model from overfitting it uses..

i *must* store third party credentials in my database. best way?

http://stackoverflow.com/questions/1994112/i-must-store-third-party-credentials-in-my-database-best-way

using a synchronous stream cipher derive the not entropy from the credentials and keep the algorithm secret just moves..

Will python SystemRandom / os.urandom always have enough entropy for good crypto

http://stackoverflow.com/questions/5480131/will-python-systemrandom-os-urandom-always-have-enough-entropy-for-good-crypto

python SystemRandom os.urandom always have enough entropy for good crypto I have a password generator import random string.. bits from dev urandom or dev random they both use whatever entropy the kernel can get its hands on. The amount of entropy available.. entropy the kernel can get its hands on. The amount of entropy available can be checked with tail proc sys kernel random entropy_avail..

How to detect motion between two PIL images? (wxPython webcam integration example included)

http://stackoverflow.com/questions/5524179/how-to-detect-motion-between-two-pil-images-wxpython-webcam-integration-exampl

code from this thread implementing his updated image entropy function. class Images3 ~ Modified version of DetectMotion function.. take a difference between images. Then you can take the entropy of that diff to get a single value threshold. It seems to work.. from PIL import Image ImageChops import math def image_entropy img calculate the entropy of an image # this could be made more..